Yamabuki Saaya from BanG Dream.
It is 100 official pictures and autotags.
Example prompt for casual Saaya:

saaya, 1girl, solo, blue eyes, smile, skirt, shirt, brown hair, yellow skirt, looking at viewer, collarbone, hand on hip, white shirt, off shoulder, blush, hair ribbon, ponytail, striped ribbon, ribbon, off-shoulder shirt, striped, short sleeves, bangs, bare shoulders, cslsk

School uniform Saaya:

saaya, 1girl, solo, hanasakigawa school uniform, school uniform, blue eyes, ribbon, brown hair, smile, hair ribbon, dress, brown dress, ponytail, looking at viewer, red ribbon, long sleeves, sailor dress, pleated dress, bangs, neck ribbon, sidelocks, buttons, double-breasted, sailor collar